Entity tax identification number Entity Tax Identification Number Rollover EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution, Rollover Maximum Maximum [Member] Legal Entity [Axis] Legal Entity [Axis] Statistical Measurement [Domain] Statistical Measurement [Domain] EBP, Description of Plan [Table] EBP, Description of Plan [Table] Mutual Funds Mutual Fund [Member] Participant compensation matched, minimum service period EBP, Requisite Service Period EBP, Requisite Service Period Revenue sharing income EBP, Investment Sold, Excluding Plan Interest in Master Trust, Selling Price EBP, Related Party and Party-in-Interest Transactions [Table] EBP, Related Party and Party-in-Interest Transactions [Table] Total Deductions EBP, Change in Net Asset Available for Benefit, Decrease Maximum borrowing, amount EBP, Note Receivable from Participant, Account, Maximum Borrowing, Amount FAIR VALUE MEASUREMENTS STABLE VALUE FUND EBP, Investment, Fair Value and NAV [Text Block] Minimum borrowing, amount EBP, Note Receivable from Participant, Account, Minimum Borrowing, Amount Total EBP, Investment, Excluding Plan Interest in Master Trust, Fair Value Basis spread on interest rate EBP, Asset Held for Investment, Participant Loan, Basis Spread On Interest Rate EBP, Asset Held for Investment, Participant Loan, Basis Spread On Interest Rate Level 1 Fair Value, Inputs, Level 1 [Member] EBP, Reconciliation of Financial Statement to Form 5500 EBP, Reconciliation of Financial Statement to Form 5500 [Table Text Block] EBP, Investment, Fair Value and NAV [Abstract] Excess Contributions Refundable EBP, Excess Contribution Payable [Policy Text Block] TOTAL ASSETS EBP, Asset ASSETS EBP, Asset [Abstract] Statistical Measurement [Axis] Statistical Measurement [Axis]  Additions: EBP, Change in Net Asset Available for Benefit, Increase [Abstract] EBP, Statement of Change in Net Asset Available for Benefit [Table] EBP, Statement of Change in Net Asset Available for Benefit [Table] Payment of Benefits EBP, Payment to Participant [Policy Text Block] TOTAL LIABILITIES EBP, Liability Amendment Flag Amendment Flag Loans deemed distributed EBP, Reconciliation to Form 5500, Net Asset Available for Benefit, Deemed Distribution Basis of Accounting EBP, Basis of Accounting [Policy Text Block] EBP, Schedule of Asset Held for Investment [Table] EBP, Schedule of Asset Held for Investment [Table] Investment, number of shares (in shares) EBP, Investment, Number of Shares EBP, Description of Plan and Accounting Change [Abstract] Receivables: EBP, Receivable [Abstract] Involuntary cash-out limit EBP, Involuntary Cash-out Limit EBP, Involuntary Cash-out Limit EBP, Investment, Fair Value and NAV EBP, Investment, Fair Value and NAV [Table Text Block] EBP, Contribution [Abstract] Vesting and eligibility service EBP, Vesting And Eligibility Service EBP, Vesting And Eligibility Service Discretionary profit sharing contribution, service period EBP, Discretionary Profit Sharing Contribution, Service Period EBP, Discretionary Profit Sharing Contribution, Service Period Investments [Domain] Investments [Domain] Discretionary profit sharing contribution, service EBP, Discretionary Profit Sharing Contribution, Service EBP, Discretionary Profit Sharing Contribution, Service Use of Estimates EBP, Use of Estimate [Policy Text Block] SCHEDULE H, PART IV, LINE 4i SCHEDULE OF ASSETS (HELD AT END OF YEAR) EBP, Schedule of Asset Held for Investment [Text Block] Cover [Abstract] EBP, Employer Contribution, Type [Axis] EBP, Employer Contribution, Type [Axis] EBP, Employer Contribution, Type Amount allocated but not yet paid EBP, Reconciliation to Form 5500, Net Asset Available for Benefit, Allocation to Withdrawing Participant, Not yet Paid Employer EBP, Change in Net Asset Available for Benefit, Increase from Employer Contribution, Cash Less: Amounts allocated to withdrawing participants at December 31, 2024 EBP, Reconciliation to Form 5500, Payment to Participant, Decrease from Allocation to Withdrawing Participant, Paid Minimum Minimum [Member] Investment Type [Axis] Investment Type [Axis] Interest from Notes Receivable from Participants EBP, Change in Net Asset Available for Benefit, Increase from Interest Income on Note Receivable from Participant Total Contributions EBP, Change in Net Asset Available for Benefit, Increase from Contribution Employee EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution, Excluding Rollover Net Appreciation in Fair Value of Investments EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Gain (Loss) on Investment Interest and Dividends EBP, Change in Net Asset Available for Benefit, Increase from Interest and Dividend Income on Investment EBP, Description of Plan [Line Items] EBP, Description of Plan [Line Items] Employee eligibility EBP, Employee Eligibility EBP, Employee Eligibility Plan number EBP, Plan Number EBP, Investment, Fair Value and NAV [Line Items] EBP, Investment, Fair Value and NAV [Line Items] DESCRIPTION OF THE PLAN EBP, Description of Plan [Text Block] EBP, Statement of Change in Net Asset Available for Benefit [Line Items] EBP, Statement of Change in Net Asset Available for Benefit [Line Items] EBP, Statement of Net Asset Available for Benefit [Table] EBP, Statement of Net Asset Available for Benefit [Table] EBP, Schedule of Asset Held for Investment [Line Items] EBP, Schedule of Asset Held for Investment [Line Items] Contributions/Prefunded Contributions EBP, Contribution [Policy Text Block] Common Stock - Fossil Group Inc. EBP, Employer, Common Stock [Member] EBP, Schedule of Asset Held for Investment [Abstract] EBP, Accounting Policy [Table] EBP, Accounting Policy [Table] Total Additions EBP, Change in Net Asset Available for Benefit, Increase Investment, Identifier [Axis] Investment, Identifier [Axis] Primary residence, borrowing term EBP, Note Receivable From Participant, Account, Primary Residence, Maximum Borrowing Term EBP, Note Receivable From Participant, Account, Primary Residence, Maximum Borrowing Term Administrative Expenses EBP, Change in Net Asset Available for Benefit, Decrease from Administrative Expense Total Assets EBP, Asset Held for Investment EBP, Employer Contribution, Type [Domain] EBP, Employer Contribution, Type [Domain] EBP, Employer Contribution, Type [Domain] Risks and Uncertainties EBP, Risk and Uncertainty [Policy Text Block] Document Information [Line Items] Document Information [Line Items] Participant compensation matched, percentage EBP, Employer Contribution, Participant Compensation Matched, Percentage EBP, Statement of Change in Net Asset Available for Benefit [Abstract] Account contributions in Fossil Group, Inc. Common Stock, percentage EBP, Investment, Employer, Common Stock, to Total Asset, Percentage General loan, borrowing term EBP, Note Receivable From Participant, General Loan, Maximum Borrowing Term EBP, Note Receivable From Participant, General Loan, Maximum Borrowing Term EBP, Tax Status [Table] EBP, Tax Status [Table] Net Increase in Net Assets Available for Benefits EBP, Change in Net Asset Available for Benefit, Increase (Decrease) EXEMPT PARTY-IN-INTEREST TRANSACTIONS EBP, Related Party and Party-in-Interest Transactions [Text Block] EBP, Related Party and Party-in-Interest Transactions [Abstract] EBP, Accounting Policy, Accounting Standard Update, and Change in Accounting Principle [Abstract] Excess Contributions Refundable EBP, Excess Contribution Payable TOTAL RECEIVABLES EBP, Receivable Benefits Paid Benefits paid to participants per the financial statements EBP, Change in Net Asset Available for Benefit, Decrease from Payment to Participant Current Value EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value Investment Income/(Loss): EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Gain (Loss) on Investment [Abstract] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] EBP, Statement of Net Asset Available for Benefit [Abstract] EBP, Accounting Policy [Line Items] EBP, Accounting Policy [Line Items] Prefunded Contributions EBP, Liability for Investment Purchase Employer Matching Contribution EBP, Employer Matching Contribution [Member] EBP, Employer Matching Contribution EBP, Tax Status [Abstract] EBP 002 EBP 002 [Member] EBP 002 EBP, Reconciliation of Financial Statement to Form 5500 [Table] EBP, Reconciliation of Financial Statement to Form 5500 [Table] Maximum annual compensation to total compensation, highly compensated employees, percentage EBP, Participant Contribution, Maximum Contribution to Eligible Compensation, Highly Compensated Employees, Percentage EBP, Participant Contribution, Maximum Contribution to Eligible Compensation, Highly Compensated Employees, Percentage EBP, Reconciliation of Financial Statement to Form 5500 [Line Items] EBP, Reconciliation of Financial Statement to Form 5500 [Line Items] Administrative Expenses EBP, Expense [Policy Text Block] Benefits paid to participants per Form 5500 EBP, Form 5500 Caption, Benefit Payment and Payments to Provide Benefits RECONCILIATION OF FINANCIAL STATEMENTS TO FORM 5500 EBP, Reconciliation of Financial Statement to Form 5500 [Text Block] Notes Receivable from Participants EBP, Asset Held for Investment, Participant Loan, after Deemed Distribution Investment Valuation and Income Recognition EBP, Investment [Policy Text Block] Document Type Document Type Entity Central Index Key Entity Central Index Key Participant loan, interest rate Plan Participants, interest rate EBP, Asset Held for Investment, Participant Loan, Interest Rate EBP, Reconciliation of Financial Statement to Form 5500 [Abstract] Vesting percentage EBP, Employer Contribution Vesting Percentage Company contribution and/ or investment earning percentage vesting to the participant in Company Matching Contributions, Fixed Rate Contributions, Discretionary Profit-Sharing Contributions, Qualified Non-Elective Contributions, and Disability Contributions, upon completion of minimum service period or attainment of maximum vesting age EBP, Tax Status [Line Items] EBP, Tax Status [Line Items] Deductions: EBP, Change in Net Asset Available for Benefit, Decrease [Abstract] Forfeited nonvested account, decrease from employer contribution EBP, Forfeited Nonvested Account, Decrease from Employer Contribution Notes Receivable from Participants EBP, Note Receivable from Participant Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES EBP, Summary of Accounting Policy [Text Block] Entity Registrant Name Entity Registrant Name LIABILITY EBP, Liability [Abstract] FEDERAL INCOME TAX STATUS EBP, Tax Status [Text Block] Maximum borrowing, to total account, percentage EBP, Note Receivable from Participant, Account, Maximum Borrowing, to Total Account, Percentage Maximum annual compensation to total compensation, percentage EBP, Participant Contribution, Maximum Contribution to Eligible Compensation, Percentage EBP, Participant Contribution, Maximum Contribution to Eligible Compensation, Percentage Document Information [Table] Document Information [Table] Temporary and seasonal employee eligibility EBP, Temporary And Seasonal Employee Eligibility EBP, Temporary And Seasonal Employee Eligibility Notes Receivable from Participants EBP, Note Receivable from Participant [Policy Text Block] Vesting period EBP, Employer Contribution Vesting Service Period Minimum Vesting service period for company contribution and/ or investment earning to the participant in Company Matching Contributions, Fixed Rate Contributions, Discretionary Profit-Sharing Contributions, Qualified Non-Elective Contributions, and Disability Contributions. Net Changes in Investments EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Income (Loss) on Investment Add: Amounts allocated to withdrawing participants at December 31, 2025 EBP, Reconciliation to Form 5500, Payment to Participant, Increase from Allocation to Withdrawing Participant, Not yet Paid EBP, Related Party and Party-in-Interest Transactions [Line Items] EBP, Related Party and Party-in-Interest Transactions [Line Items] NET ASSETS AVAILABLE FOR BENEFITS Net Assets Available for Benefits, Beginning of Year Net Assets Available for Benefits, End of Year Net assets available for benefits per the financial statements EBP, Net Asset Available for Benefit Entity [Domain] Entity [Domain] Contributions: EBP, Change in Net Asset Available for Benefit, Increase from Contribution [Abstract] Forfeited nonvested account EBP, Forfeited Nonvested Account Pretax, maximum annual compensation to total compensation, percentage EBP, Employer Contribution, Matching Percentage Net assets per the Form 5500 EBP, Form 5500 Caption, Net Assets NAV Fair Value Measured at Net Asset Value Per Share [Member] EBP, Investment, Fair Value and NAV [Table] EBP, Investment, Fair Value and NAV [Table] EBP, Statement of Net Asset Available for Benefit [Line Items] EBP, Statement of Net Asset Available for Benefit [Line Items]